In this fascinating Greek flick, a group of people known as the Alps comfort grieving loved ones by impersonating the dearly departed.

As film editor turned documentarian Stan Warnow correctly observes, “it’s painful to watch” his shy father — a celebrated composer of eccentric “swing” music who was drafted into replacing his late brother as the band leader on TV’s “Your Hit Parade” — being interviewed on Edward R. Murrow’s “Person to Person.” Raymond Scott, whose attempts to eradicate his Jewish background went beyond changing his name to a nose job, was basically an eccentric engineer and inventor who drifted into music, where he led a famous quintet that appeared in a handful of Hollywood movies.

Scott abandoned his wife (Warnow’s mother) and children to start another family with Dorothy Collins, a singing protégée who had lived with them since she was 12. Warnow offers telling interviews with his mom (who died in 2001) and sister, as well as Scott’s third wife — but not, significantly, with Collins’ daughters with Scott. (Both he and Collins died in 1994, but the latter left behind lots of recorded interviews that are heard here.)

“Deconstructing Dad” pays lavish tribute to the work of Scott, an electronic-music pioneer who built a predecessor to the Moog synthesizer and spent much of the 1970s as a research guru for Motown Records. Accolades come from such admirers as Oscar-winning composer John Williams (whose dad was a member of the Raymond Scott Quintet) and Mark Mothersbaugh of Devo. But the best evidence of this troubled man’s genius is provided by ample samples of his music, much of which will be familiar to fans of Warner Bros. cartoons from the ’30s and ’40s.